The prototype appears to mount on top of existing vents and the dampers are also fully exposed room-side. A device that's sticking up an inch from the floor rather than being flush is going to have problems, whether it's tripping or stubbing your toes over it (and dislodging it by doing so) or just damaging the dampers by accidentally stepping on it. That said, I imagine that it's pretty likely that they'll have a solution for it when they get to market.
